From snsadv@lac.co.jp Mon Oct 15 23:21:08 2001 From: "snsadv@lac.co.jp" To: bugtraq@securityfocus.com Date: Tue, 16 Oct 2001 11:34:56 +0900 Subject: [SNS Advisory No.44] Trend Micro OfficeScan Corporate Edition(Virus Buster Corporate Edition) Configuration File Disclosure Vulnerability ---------------------------------------------------------------------- SNS Advisory No.44 Trend Micro OfficeScan Corporate Edition(Virus Buster Corporate Edition) Configuration File Disclosure Vulnerability Problem first discovered: Wed, 29 Aug 2001 Published: Tue, 16 Oct 2001 ---------------------------------------------------------------------- Overview: --------- A vulnerability was discovered in Trend Micro OfficeScan Corporate Edition (Japanese version: Virus Buster Corporate Edition) that allows remote attackers to access configuration files containing passwords. Problem Description: -------------------- Trend Micro OfficeScan Corporate Edition (Japanese version: Virus Buster Corporate Edition) is an antivirus software for enterprise use. This software provides real-time management, real-time configuration and updates pattern files on client machines from management console. When this software is installed, several virtual directories are created in order to provide Web-based management console function. However, attackers will be able to access one of these directories, /officescan/hotdownload, without authentication. In addition, the file stored in this directory, ofcscan.ini, is the configuration file used by OfficeScan Corporate Edition. If this vulnerability is exploited, an attacker will be able to gain access to the configuration information from this file. Moreover, although this file stores an encrypted password, it is possible to decrypt it easily. For example, OfficeScan Corporate Edition has encrypted the following character sequences, "12345": 701F702132 This string is generated by a specific algorithm and it is possible to decrypt it easily. If an application uses a duplicated password, an attacker will be able to cause further impacts on the system. Tested Versions: ---------------- OfficeScan Corporate Edition Ver.3.53 Virus Buster Corporate Edition Ver.3.53 Tested OS: ---------- Windows NT 4.0 Server + SP6a [English] Windows NT 4.0 Server + SP6a [Japanese] Solution: --------- A patch to fix this issue for Virus Buster Corporate Edition is available at the following URL: http://www.trendmicro.co.jp/esolution/solutionDetail.asp?solutionID=3182 And we asked Trend Micro about the patch for OfficeScan Corporate Edition, however we couldn't get any information. Discovered by: -------------- ARAI Yuu (LAC) y.arai@lac.co.jp Disclaimer: ----------- All information in these advisories are subject to change without any advanced notices neither mutual consensus, and each of them is released as it is. LAC Co.,Ltd. is not responsible for any risks of occurrences caused by applying those information. ------------------------------------------------------------------ Secure Net Service(SNS) Security Advisory Computer Security Laboratory, LAC http://www.lac.co.jp/security/